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Finding the Fourth Proportional to 218,612.80, 327,861.60 and 68,852.80

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Solution

The fourth proportional to 218,612.80, 327,861.60 and 68,852.80 is: 103,261.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,612.80 : 327,861.60 = 68,852.80 : x
  2. Step 2: Convert to fraction form
    218,612.80/327,861.60 = 68,852.80/x
  3. Step 3: Cross multiply
    218,612.80x = 327,861.60 × 68,852.80
  4. Step 4: Simplify right side
    218,612.80x = 22,574,189,172.48
  5. Step 5: Solve for x
    x = 22,574,189,172.48/218,612.80
  6. Step 6: Final answer
    x = 103,261.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.